Maintenance - Makita BUH550 Bedienungsanleitung

unit grooves. Using the excessive force may
damage it.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before attempting to
perform inspection or maintenance.
Cleaning the tool
Clean out the tool by wiping off dust with a dry or
soap-dipped rag.
CAUTION:
Never use gasoline, benzine, thinner, alcohol or the
•
like. Discoloration, deformation or cracks may
result.
Blade maintenance
Smear the blade before and once per hour during
operation using machine oil or similars.
NOTE:
Before smearing the blade, remove the chip
•
receiver.
After operation, remove dust from both sides of the blade
with wired brush, wipe off it with a rag and then apply
enough low-viscosity oil, such as machine oil etc. and
spray-type lubricating oil.
CAUTION:
Do not wash the blades in water. Failure to do so
•
may cause rust or damage on the tool.
Removing or installing shear blade
CAUTION:
Before removing or installing shear blade, always
•
be sure that the tool is switched off and the battery
cartridge is removed.
When replacing the shear blade, always wear
•
gloves without removing blade cover so that hands
and face does not directly contact the blade. Failure
to do so may cause personal injury.
NOTE:
Do not wipe off grease from the gear and crank.
•
Failure to do so may cause damage to the tool.
For specific way of removing and installing shear
•
blades refer to the reverse of a package for
accessory shear blades.
Removing the shear blades
Reverse the tool and loosen four screws.
Fig.16
NOTE:
Be careful not to get your hands dirty as grease is
•
applied in the shear blade driving area.
Remove the under cover.
Fig.17
Remove the plate.
Fig.18
Set the crank at the angle as shown in the figure with a
slotted bit screwdriver.
Fig.19
Remove two screws from the shear blades and the shear
blade unit will be taken out.
Fig.20
CAUTION:
Return the gear to the original position in such a
•
manner as it was installed if it should be taken away
by mistake.
Installing the shear blade
Prepare 4 removed screws (For under cover), 2 screws
(For shear blade), plate, under cover, and new shear
blades.
Adjust the crank position as shown in the figure. At this
time, apply some grease provided with new shear blades
to the periphery of the crank.
Fig.21
Overlap the oval hole in the upper blade with that in the
lower one.
Fig.22
Take out the blade cover from the old shear blades and fit
it onto the new ones for easy handling during the
replacement of blades.
Fig.23
Place the new shear blades on the tool so that the oval
holes in the shear blades fit onto the crank. Overlap the
holes in the shear blades with the screw holes in the tool
and then secure them with two screws.
Fig.24
Check the crank for smooth turn with a slotted bit
screwdriver.
Fig.25
Install the plate, under cover on the tool. Tighten the
screw firmly.
NOTE:
There is no distinction between the top and bottom
•
of the plate.
Remove the blade cover and then turn on the tool to
check it for proper movement.
NOTE:
When the shear blades does not operate properly,
•
there is a poor fit between the blades and crank.
Redo from the beginning.
Replacing carbon brushes
Fig.26
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
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